In this Jan. 22, 2015 photo, a zodiac carrying a team of international scientists heads to Chile's station Bernardo O'Higgins, Antarctica. Water is eating away at the Antarctic ice, melting it where it hits the oceans. As the ice sheets slowly thaw, water pours into the sea, 130 billion tons of ice (118 billion metric tons) per year for the past decade, according to NASA satellite calculations. (AP Photo/Natacha Pisarenko) (The Associated Press)

In this Jan. 22, 2015 photo, a Gentoo penguin regurgitates food to feed its chick. near Chile's station Bernardo O'Higgins, Antarctica. From the ground of this extreme northern part of Antarctica, a spectacular white and blinding ice seems to extend forever. What can’t be seen is the battle raging u...